We perform a numerical investigation of the fields evolution in the supersymmetric inflationary model based on radiative corrections. Supergravity corrections are also included. We find that, out of all the examined initial data, only about 10% give an adequate amount of inflation and can be considered as ”natural”. Moreover, these successful initial conditions appear scattered and more or less...

The main purpose of this paper is to investigate the retailer’s inventory policy under two levels of trade credit to reflect the supply chain management situation. In this paper, we assume that the retailer has the powerful decision-making right. So, we extend the assumption that the retailer can obtain the full trade credit offered by the supplier and the retailer just offers the partial trade...

ABSTRACT In this paper, we study a deterministic inventory model for deteriorating items under time-dependent partial backlogging. Though lot of factors involving inventory affect the demand, among them time and stock are the most important factors. Therefore, we consider here the combined stock and time varying demand to make the theory more applicable in practice. We study the effects time de...

Abstract The model describes an EOQ model with time-varying deterioration, partial backlogging which depends on the length of the waiting time for the next replenishment, linearly time-varying demand function over a finite time horizon and variable replenishment cycle. The model is solved analytically to obtain the optimal solution of the problem. It is illustrated with the help of a numerical ...

— This essay focuses on two questions: How do the current economic systems and institutions of Muslim countries differ from those of other countries at the same stage of economic development? What is the impact of Islam on the economic and social performance of these countries? Employing a cluster analysis I find that there is no special Muslim economic system; moreover, few economic institutio...

This is mainly a discussion paper on some aspects of European growth from 1870 to the mid-1990s. This paper presents a perspective of modern economic growth as a historical process evolving in long cycles, derived from a structural analysis of growth. This perspective has certain implications for development not only over time but also in space, which are contrasted to some basic traits in two ...

One of the celebrated extensions of the economic order/production quantity (EOQ/EPQ) model is one that assumes a received shipment contains a fraction of imperfect (non-conforming) quality items, where these items, detected by 100% screening, are sold as a single batch at a discounted price. This paper revisits this model (Salameh and Jaber, 2000, Int. J. Prod. Econ. 64 (1), 59–64) and extends ...

The new comparative economics focuses on individual institutions rather than considering the economic system as an entity. In this essay we argue that economic systems should be defined in terms of clusters of complementary or covarying institutions. A cluster analysis of OECD countries, using data on forty different economic institutions, shows that four economic systems can be used to charact...

The economic order quantity (EOQ) model is the simplest and earliest inventory model in the literature. Its simple mathematics is attributed to its assumptions, which are rarely met. Salameh and Jaber [2000. Economic production quantity model for items with imperfect quality. Int. J. Prod. Econ. 64, 59–64] addressed one of these assumptions that items received or produced are not of perfect qua...

For a long time, China's economic development ignore the constraints of resources and environmental costs but onesided pursue GDP. In 2014, the State Council issued a document to develop the Yangtze River economic zone into a "green ecological corridor". The green development of the Yangtze River economic zone is of high-profile. This paper attempts to consider the resource and environmental fa...